K9 Glass Negative Filter 565nm Laser Protective Notch Laser System Astronomy Filter

A notch filter, also known as a negative filter, band-stop, or band-rejection filter, has the core function of blocking light within a specific wavelength range while transmitting light on both sides of that range, exhibiting a concave shape on the spectral curve. For a 565nm notch filter, it attenuates light within a specific wavelength range around 565nm (the stopband) to an extremely low level, while allowing most wavelengths outside the stopband to pass through with almost no intensity loss.

Key Parameters and Product Information of the 565nm Notch Filter

• Blocking Depth: This is an important indicator of the notch filter's ability to attenuate light at specific stopband wavelengths. Although the search results did not explicitly provide the blocking depth value for the 565nm notch filter, notch filters can achieve a blocking depth of up to OD6.2, and the 565nm notch filter should also possess a high blocking depth to meet practical application requirements.
• Transmission Range: Refers to the wavelength range over which the notch filter effectively transmits light. Different models of notch filters have varying transmission ranges, and the 565nm notch filter will have its specific transmission range to ensure good transmission of light in the adjacent wavelength bands.